Coal screening device and using method thereof

A screening device and coal technology, applied in chemical instruments and methods, sieves, solid separation, etc., can solve the problems of easy clogging of sieve holes, wear of hammer heads, and large maintenance, so as to improve screening efficiency and increase coal production. The effect of low circulation and manufacturing cost

Pending Publication Date: 2019-11-12
陕西未来能源化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the coal screening systems of thermal power plants, coal preparation plants and coal chemical enterprises mostly use screening equipment such as vibrating screens, drum screens, roller screens, and sinusoidal screens. These screening equipments are noisy and easy to block the screen holes. , high energy consumption, large maintenance and other disadvantages
Especially when the water content of the coal is slightly high, the screening efficiency of the above-mentioned screening equipment will be low, so that a

Method used

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  • Coal screening device and using method thereof
  • Coal screening device and using method thereof
  • Coal screening device and using method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0024] Example 1

[0025] Such as figure 1 , 2 As shown in, 3, and 4, the coal screening device of the present invention includes a casing 1. One side of the top of the casing is provided with a feed port 2, and the bottom is provided with small and large particle discharge ports 9, 10; There is a stepped sieve plate 12 extending obliquely from the side of the feed port 2 to the direction of the large particle discharge port 10. The stepped sieve plate 12 is longitudinally spliced ​​into a sieve plate through multiple sieve bars, and is composed of a stepped vertical surface and The step planes are combined and connected to form an inclined step shape; the lower side of the feed port 2 is provided with a guide baffle 3, which extends to the first-level feed buffer rotating screen roller 4 and the second-level feed buffer rotation On the upper side of the sieve roller 6, the uppermost end of the stepped sieve plate 12 is connected to the lower side of the secondary feed buffer rot...

Example Embodiment

[0033] Example 2

[0034] The inventive device of this embodiment includes a housing 1. One side of the top of the housing 1 is provided with a feed port 2, and the bottom is provided with small and large particle discharge ports 9, 10; the housing 1 is provided with a feed port 2The stepped sieve plate 12 extending obliquely from the side of the large particle discharge port 10; the stepped sieve plate 12 is longitudinally spliced ​​into a sieve plate by a plurality of sieve bars side by side, and is connected by a combination of the stepped elevation and the stepped plane to form an inclined step Shape; the lower side of the inlet 2 is provided with a guide baffle 3, the baffle 3 extends to the upper side of the primary feed buffer rotating screen roller 4 and the secondary feed buffer rotating screen roller 6, step The uppermost end of the sieve plate 12 is connected to the lower side of the secondary feed buffer rotating sieve roller 6 for receiving the coal that is buffered ...

Example Embodiment

[0038] Example 3

[0039] The inventive device of this embodiment includes a housing 1. One side of the top of the housing 1 is provided with a feed port 2, and the bottom is provided with small and large particle discharge ports 9, 10; the housing 1 is provided with a feed port 2The stepped sieve plate 12 extending obliquely from the side of the large particle discharge port 10; the stepped sieve plate 12 is longitudinally spliced ​​into a sieve plate by a plurality of sieve bars side by side, and is connected by a combination of the stepped elevation and the stepped plane to form an inclined step Shape; the lower side of the inlet 2 is provided with a guide baffle 3, the baffle 3 extends to the upper side of the primary feed buffer rotating screen roller 4 and the secondary feed buffer rotating screen roller 6, step The uppermost end of the sieve plate 12 is connected to the lower side of the secondary feed buffer rotating sieve roller 6 for receiving the coal that is buffered ...

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Abstract

The invention discloses a coal screening device and a using method thereof. The coal screening device comprises a shell, a baffle plate, a first-stage feeding buffer rotating carrier roller, a second-stage feeding buffer rotating carrier roller, a rotating shafts, rotating wheels with gear teeth, stepped screen plates and a speed reducing driving mechanism, wherein a feeding hole is formed in oneside of the top of the shell, and a large-particle discharging hole and a small-particle discharging hole are formed in the bottom of the shell; the baffle plate is arranged on the position, below thefeeding hole, of the interior of the shell; and the first-stage feeding buffer rotating carrier roller, the second-stage feeding buffer rotating carrier roller and the plurality of rotating shafts are obliquely arranged on the two inner walls of the shell from top to bottom in sequence, and the plurality of rotating wheels with the gear teeth and corresponding stepped screen plates are arranged on each rotating shaft in parallel. When the coal is screened, the noise is low, the blockage is not easy, the energy consumption is low, the maintenance is basically not needed, and a subsequent crusher is not easy to block in the process of screening the sticky coal containing certain moisture.

Description

technical field [0001] The invention relates to the field of coal, in particular to a coal screening device and a method for using the same. Background technique [0002] At present, the coal screening systems of thermal power plants, coal preparation plants and coal chemical enterprises mostly use screening equipment such as vibrating screens, drum screens, roller screens, and sinusoidal screens. These screening equipments are noisy and easy to block the screen holes. , high energy consumption, large maintenance and other shortcomings. Especially when the water content of the coal is slightly high, the screening efficiency of the above-mentioned screening equipment will be low, so that a large amount of crushed coal will enter the crusher, causing the gap of the grate to control the particle size inside the crusher to be blocked, and the wear of the hammer head will be accelerated exponentially. As a result, the vibration efficiency of the inner rotor of the crusher is red...

Claims

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Application Information

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IPC IPC(8): B02C23/14B07B9/00B07B1/50B07B1/46
CPCB02C23/14B07B1/46B07B1/50B07B9/00
Inventor 唐广文王言成冯质杭刘勇
Owner 陕西未来能源化工有限公司
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